1QH7

CATALYSIS AND SPECIFICITY IN ENZYMATIC GLYCOSIDE HYDROLASES: A 2,5B CONFORMATION FOR THE GLYCOSYL-ENZYME INTERMIDIATE REVEALED BY THE STRUCTURE OF THE BACILLUS AGARADHAERENS FAMILY 11 XYLANASE

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5		AMMONIUM SULPHATE 30%, MES 0.1M PH 6.5

Crystal Properties
Matthews coefficient	Solvent content
2.4	48.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 71.86	α = 90
b = 75.36	β = 90
c = 78.4	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MARRESEARCH		1998-05-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.78	54.2	99.1	0.055	5.5	27.4	5.6		40782			14.47

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.78	1.81	98.3		0.162	16.2	6.7	3.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.78	20	41488	1285	99.1	0.117	0.176	RANDOM	16.49

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]

RMS Deviations
Key	Refinement Restraint Deviation
p_transverse_tor	27.2
p_staggered_tor	13.6
p_planar_tor	5.5
p_scangle_it	3.785
p_mcangle_it	2.877
p_scbond_it	2.822
p_mcbond_it	2.182
p_multtor_nbd	0.249
p_singtor_nbd	0.17
p_chiral_restr	0.12
p_xyhbond_nbd	0.107
p_angle_d	0.031
p_planar_d	0.031
p_plane_restr	0.014
p_bond_d	0.013
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3328
Nucleic Acid Atoms
Solvent Atoms	611
Heterogen Atoms	20

Software

Software
Software Name	Purpose
AMoRE	phasing
REFMAC	refinement
SCALEPACK	data scaling